Author: emaste
Date: Mon Nov 23 01:23:03 2009
New Revision: 199685
URL: http://svn.freebsd.org/changeset/base/199685
Log:
MFC r199209:
Fix a potential buffer boundaries overflow in devclass_add_device() by
using all available int lenghts digits for storing the information.
Modified:
stable/6/sys/kern/subr_bus.c
Directory Properties:
stable/6/sys/ (props changed)
stable/6/sys/conf/ (props changed)
stable/6/sys/contrib/pf/ (props changed)
stable/6/sys/dev/cxgb/ (props changed)
Modified: stable/6/sys/kern/subr_bus.c
==============================================================================
--- stable/6/sys/kern/subr_bus.c Sun Nov 22 23:54:19 2009
(r199684)
+++ stable/6/sys/kern/subr_bus.c Mon Nov 23 01:23:03 2009
(r199685)
@@ -35,6 +35,7 @@ __FBSDID("$FreeBSD$");
#include <sys/lock.h>
#include <sys/kernel.h>
#include <sys/kobj.h>
+#include <sys/limits.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
@@ -1365,7 +1366,7 @@ devclass_add_device(devclass_t dc, devic
PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc)));
- buflen = snprintf(NULL, 0, "%s%d$", dc->name, dev->unit);
+ buflen = snprintf(NULL, 0, "%s%d$", dc->name, INT_MAX);
if (buflen < 0)
return (ENOMEM);
dev->nameunit = malloc(buflen, M_BUS, M_NOWAIT|M_ZERO);
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